/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.metrics;



import com.google.auto.value.AutoValue;

import com.bff.gaia.unified.sdk.annotations.Experimental;

import com.bff.gaia.unified.sdk.annotations.Experimental.Kind;



/** The result of a {@link Distribution} metric. */

@Experimental(Kind.METRICS)

@AutoValue

public abstract class DistributionResult {



  public abstract long getSum();



  public abstract long getCount();



  public abstract long getMin();



  public abstract long getMax();



  public double getMean() {

    return (1.0 * getSum()) / getCount();

  }



  /** The IDENTITY_ELEMENT is used to start accumulating distributions. */

  public static final DistributionResult IDENTITY_ELEMENT =

      create(0, 0, Long.MAX_VALUE, Long.MIN_VALUE);



  public static DistributionResult create(long sum, long count, long min, long max) {

    return new AutoValue_DistributionResult(sum, count, min, max);

  }

}